Land and Marine Surveying in Reference to the Preparation of Plans for Roads and Railways, Canals, Rivers, Towns' Water Supplies, Docks and Harbours: With Description and Use of Surveying InstrumentsCrosby Lockwood and Company, 1886 - 230 pages |
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Page 80
... screw in the Ordnance pattern box sextant . The glasses shown at G and H are within the box , by which they are protected from injury , and their adjust- ments , when once perfected , are protected from any dis- turbance , so much so ...
... screw in the Ordnance pattern box sextant . The glasses shown at G and H are within the box , by which they are protected from injury , and their adjust- ments , when once perfected , are protected from any dis- turbance , so much so ...
Page 85
... screw . But besides this , the divided limb is numbered both to the right and left , commencing at zero to 120 ° , and back- ward from 120 ° to 180 ° , and beyond to 230 ° ; the latter row of figures is farthest from the divisions , and ...
... screw . But besides this , the divided limb is numbered both to the right and left , commencing at zero to 120 ° , and back- ward from 120 ° to 180 ° , and beyond to 230 ° ; the latter row of figures is farthest from the divisions , and ...
Page 90
... screw , partly visible in the cut , under the horizontal limb . The diameter of the lower plate is greater than that of the upper one , and its edge is chamfered off and covered with silver , to receive the graduations . On opposite ...
... screw , partly visible in the cut , under the horizontal limb . The diameter of the lower plate is greater than that of the upper one , and its edge is chamfered off and covered with silver , to receive the graduations . On opposite ...
Page 91
... screws , three of which are shown in the figure . These turn in sockets fixed to the lower plate ; they are set in pairs ... screw adapted to the staff head , which is connected by brass joints to three mahogany legs . We should hardly.
... screws , three of which are shown in the figure . These turn in sockets fixed to the lower plate ; they are set in pairs ... screw adapted to the staff head , which is connected by brass joints to three mahogany legs . We should hardly.
Page 92
... screw , s , which is attached to the upper parallel plate , P. In like manner , the upper or vernier plate , v , can be fixed to the lower in any position by a clamp , c . This also is furnished with a slow motion , the screw of which ...
... screw , s , which is attached to the upper parallel plate , P. In like manner , the upper or vernier plate , v , can be fixed to the lower in any position by a clamp , c . This also is furnished with a slow motion , the screw of which ...
Other editions - View all
Land and Marine Surveying: In Reference to the Preparation of Plans for ... William Davis Haskoll No preview available - 2017 |
Common terms and phrases
adjustment Architect arrow Author base line beam compasses bisection BOILER box sextant centre chain line chainage clamp cloth Coloured compass Construction Crown 8vo D. K. CLARK distance draw edge Electrical Engineer ENGINEER'S Enlarged equal exactly Fcap feet long fence field book Formulæ Fourth Edition gauge give ground Guide Gunter's chain horizontal Illustrations inches instrument intersection Iron leader length limb lunitidal intervals manner Manual means measure Mechanical method Mining minutes notch object observations offset overfall Oyster Rock paper parallel parallel ruler pencil plot pole Practical Handbook Practical Treatise prick protractor quantity Railway rain gauge rainfall RALPH TATE reading referred Revised right angles road scale SCOTT BURN screw Second Edition side sight sine square staff station straight line straight-edge streams Students survey surveyor Tables taken tangent telescope theodolite Third Edition tie line tion triangle vernier plate vertical zero
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Page 1 - Surveying, Land and Marine. LAND AND MARINE SURVEYING, in Reference to the Preparation of Plans for Roads and Railways ; Canals, Rivers, Towns' Water Supplies: Docks and Harbours.
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